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Cheap flights from Louisville to Sydney from $647

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
3:25 pm - 6:50 am
SDF
-
SYD
25h 25m
2 stops
Delta Logo
9:15 am - 7:11 pm
SYD
-
SDF
23h 56m
2 stops
$1,192Delta
Mon, Aug 10 - Wed, Aug 19
Qantas Airways Logo
7:03 pm - 6:55 am
SDF
-
SYD
21h 52m
1 stop
Qantas Airways Logo
12:00 pm - 6:18 pm
SYD
-
SDF
20h 18m
1 stop
$1,286Qantas Airways
Tue, Sep 1 - Tue, Sep 8
Qantas Airways Logo
4:26 pm - 6:55 am
SDF
-
SYD
22h 29m
1 stop
Qantas Airways Logo
7:20 am - 5:33 pm
SYD
-
SDF
26h 13m
2 stops
$1,289Qantas Airways
Tue, Dec 1 - Tue, Dec 8
Qantas Airways Logo
4:26 pm - 6:55 am
SDF
-
SYD
22h 29m
1 stop
Qantas Airways Logo
7:50 pm - 3:44 pm
SYD
-
SDF
35h 54m
2 stops
$1,290Qantas Airways
Mon, Nov 9 - Mon, Nov 23
Qantas Airways Logo
4:26 pm - 6:55 am
SDF
-
SYD
22h 29m
1 stop
Qantas Airways Logo
7:50 pm - 5:39 pm
SYD
-
SDF
37h 49m
2 stops
$1,291Qantas Airways
Tue, Nov 10 - Mon, Nov 23
Qantas Airways Logo
1:19 pm - 7:05 am
SDF
-
SYD
27h 46m
2 stops
Qantas Airways Logo
12:00 pm - 6:18 pm
SYD
-
SDF
20h 18m
1 stop
$1,302Qantas Airways
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
3:50 pm - 7:00 am
SDF
-
SYD
23h 10m
1 stop
United Airlines Logo
9:20 am - 1:33 pm
SYD
-
SDF
20h 13m
1 stop
$1,306United Airlines
Tue, Dec 1 - Tue, Dec 8
United Airlines Logo
3:35 pm - 7:00 am
SDF
-
SYD
23h 25m
1 stop
United Airlines Logo
9:20 am - 7:56 pm
SYD
-
SDF
26h 36m
1 stop
$1,307United Airlines
Mon, Nov 9 - Mon, Nov 23
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
49h 35m
2 stops
United Airlines Logo
10:20 am - 8:36 pm
SYD
-
SDF
24h 16m
2 stops
$1,308United Airlines
Wed, Aug 26 - Sat, Sep 5
Qantas Airways Logo
6:24 pm - 9:20 am
SDF
-
SYD
46h 56m
2 stops
Qantas Airways Logo
4:45 pm - 5:39 pm
SYD
-
SDF
40h 54m
2 stops
$1,309Qantas Airways
Mon, Nov 9 - Mon, Nov 23

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United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets
United Airlines
Dec 1
SDF3:50 pmLouisville Intl
23h 10m
1 stop
SYD7:00 amSydney Kingsford Smith
Dec 8
SYD9:20 amSydney Kingsford Smith
20h 13m
1 stop
SDF1:33 pmLouisville Intl
$1,306
United Airlines
Nov 9
SDF3:35 pmLouisville Intl
23h 25m
1 stop
SYD7:00 amSydney Kingsford Smith
Nov 23
SYD9:20 amSydney Kingsford Smith
26h 36m
1 stop
SDF7:56 pmLouisville Intl
$1,307
United Airlines
Aug 26
SDF3:25 pmLouisville Intl
49h 35m
2 stops
SYD7:00 amSydney Kingsford Smith
Sep 5
SYD10:20 amSydney Kingsford Smith
24h 16m
2 stops
SDF8:36 pmLouisville Intl
$1,308

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets
Qantas Airways
Sep 1
SDF7:03 pmLouisville Intl
21h 52m
1 stop
SYD6:55 amSydney Kingsford Smith
Sep 8
SYD12:00 pmSydney Kingsford Smith
20h 18m
1 stop
SDF6:18 pmLouisville Intl
$1,286
Qantas Airways
Dec 1
SDF4:26 pmLouisville Intl
22h 29m
1 stop
SYD6:55 amSydney Kingsford Smith
Dec 8
SYD7:20 amSydney Kingsford Smith
26h 13m
2 stops
SDF5:33 pmLouisville Intl
$1,289
Qantas Airways
Nov 9
SDF4:26 pmLouisville Intl
22h 29m
1 stop
SYD6:55 amSydney Kingsford Smith
Nov 23
SYD7:50 pmSydney Kingsford Smith
35h 54m
2 stops
SDF3:44 pmLouisville Intl
$1,290

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 20, 2026.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 8/10

3:25 pm-6:50 am

2 stops25h 25m

Sydney Kingsford Smith

Wed 8/19

9:15 am-7:11 pm

2 stops23h 56m

$1,192
Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/1

7:03 pm-6:55 am

1 stop21h 52m

Sydney Kingsford Smith

Tue 9/8

12:00 pm-6:18 pm

1 stop20h 18m

$1,286

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

4:26 pm-6:55 am

1 stop22h 29m

Sydney Kingsford Smith

Tue 12/8

7:20 am-5:33 pm

2 stops26h 13m

$1,289

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 11/9

4:26 pm-6:55 am

1 stop22h 29m

Sydney Kingsford Smith

Mon 11/23

7:50 pm-3:44 pm

2 stops35h 54m

$1,290

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 11/10

4:26 pm-6:55 am

1 stop22h 29m

Sydney Kingsford Smith

Mon 11/23

7:50 pm-5:39 pm

2 stops37h 49m

$1,291

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/1

1:19 pm-7:05 am

2 stops27h 46m

Sydney Kingsford Smith

Tue 9/8

12:00 pm-6:18 pm

1 stop20h 18m

$1,302

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

3:50 pm-7:00 am

1 stop23h 10m

Sydney Kingsford Smith

Tue 12/8

9:20 am-1:33 pm

1 stop20h 13m

$1,306

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 11/9

3:35 pm-7:00 am

1 stop23h 25m

Sydney Kingsford Smith

Mon 11/23

9:20 am-7:56 pm

1 stop26h 36m

$1,307

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 8/26

3:25 pm-7:00 am

2 stops49h 35m

Sydney Kingsford Smith

Sat 9/5

10:20 am-8:36 pm

2 stops24h 16m

$1,308

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 11/9

6:24 pm-9:20 am

2 stops46h 56m

Sydney Kingsford Smith

Mon 11/23

4:45 pm-5:39 pm

2 stops40h 54m

$1,309

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, March is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Sydney during the month of March, then departing from Louisville during the month August is also very affordable. Most momondo users find prices during this month for around $1,191.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 22% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

21h 52m

Direct flights

None
The fastest flight from Louisville to Sydney takes 21h 52m
There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.
Search flight deals

Frequently asked questions about flying from Louisville to Sydney

  • How far is Louisville Intl to Sydney Kingsford Smith by plane?

    A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 21h 52m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $662Free CancellationRating
7.8
8,476 reviews
Search Delta flights
United AirlinesPriceFrom $1,212Free CancellationRating
7.4
10,007 reviews
Search United Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Wollongong
Penrith
Katoomba
Cronulla
Leura
Randwick
Lithgow
Coogee
Manly
Terrigal
Charlestown
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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